Tooth separator



' EQW532 J W IVORY TOOTH SEPARATOR Filed-July 1, 1923 Aug. 14, 1923.

' ATTORNEYS.

' is a specification.

Patented Aug. 15

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TooTH SEPARA'IOR.

Application filed July 1,-

T 0 all whom it may concern Be it known that I, JAMES WV. IVORY, a citizen of the United States, residing in the city and county of Philadelphia, State of Pennsylvania, have invented a new and useful Tooth Separator, ofwhich the following My invention consists of a tooth separator formed of a pair of arms pivotally connected, separating points on said arms, means on said arms for operating the same and consequently said points in'opposite directions, and guides for said points, said arms having on their sides oifsets, the advantages of which will be hereinafter described. 1

It consists also in providing the separa tor with an anchor which be seated on a tooth adjacent to the teeth that are to be separated thus holding the separator firmly in position during the operation of separating' the teeth, as will be hereinafter described.

The invention is satisfactorilv illustrated in the accompanying drawing, but the important instrumentalities thereof mayv be varied, and sofit is to be understood that the invention is not limited to thespecific details shown and described, as long as they are within the spirit or scope of the claims.

Figure 1 represents a perspective view of a tooth separator embodying my invention.

Figure 2 represents an end view thereof.

Figure 3 represents a bottom plan view thereof.

Figure 4 represents a longitudinal section thereof on line 44 Figure 2.

Figure 5 represents a perspective view of the device detached from other members thereof.

Similar numerals of reference indicate COII'GSPODCllIlg parts in the figures.

Referring to the drawings.

1 designates a pair of arms which areconnected at one end by the pivot 2 whereby the arms may be moved to and from each other. On the ends of said arms opposite to said pivot 2 are the separating points 3 which project towards each other and are adapted to enter between adjacent teeth to separate the same.

Freely fitted onsaid arms is the tubular yokee in whose side are the elongated slots 5 which receive the adjacent portions of said arms and allow them to move therein in o-pposite directions. The ends of the yoke are internally threaded and to either end of 1922. Serial No. 572,157.

which is fitted the screw 6 which is adapted to bear against the side of the adjacent arm whereby by operating said screw said arm may be moved towards the opposite arm,

' and thus operate the points 3 in the separation of the teeth between which latter said points are adjusted, it being evident that said screw 6 may be applied to either end of the yoke as may be required.

Connectedwith the arms 1 at their pivotal ends is the spring 7 whose tendency is to move said arms and consequently the points from each other,this being occasioned when the screw 6 is rotated in reversed direction when the deviceis to be! removed from the teeth.

8 designates the frame of the device, thesame'consisting of 'an inverted U-shaped plate in whose head 9 is fitted the screw 10 to whose lower end is swiveled the anchor 11 which occupies a posti'on between the side legsr12 of said frame, said legs having on their ends the loops 13 which sustain said frame on the point and in which are freely fitted the points 3 whereby the latter may slide in said loops in their opposite directions and thus be guided true in their motions, and alsoserving when the points are in operative position to prevent twisting or irregular motions of the points.

The anchor 11 consists ofa plate to which the screw 10 is swiveled and depending flanges let on the side ends of said plate forming a inemb'er which may be fitted on the crown of a tooth acent to the teeth to be separated and embrace the sides thereof, it being seen that when the points are presented to the teeth to be separated, the screw 10 is rotated whereby the anchor is engaged with the tooththat it is to occupy and is seated firmly thereon and thus the device is retained tightly in position and the frame 8 especially is prevented from shifting. Then the screw 6 is: properly rotated and so the points 3 perform their separating operation. It will be seen also that the anchor may be. secured in position prior to'the operation of the separation of the teeth, and the separating points may be moved in opposite directions without disturbing the anchor, it being noticed that the frame 8 is freely mounted on the side arms 15 by its loops 13 receiving the separating points 3 and so said frame is sustained on said points and the latter are movable in and out of said loops without disturbing the et tia frame and consequently the anchor, as stated above. i

The arms 1 have on their rear ends 1nturned portions forming eyes'in which the The sides of connecting pivot '2 is placed.

I said arms intermediate of said eyes and the 7 points of the separator have thereon offsets 1.5 which form elbows whereby the rear portions of saidarms are closer to each other than, the forward portions which latter are thus spread apart to a greater extent, thus widening the space between the said forward portions.

' assembled normal position I the same is avoided.

The yoke t is mounted freely on said rear portions and may be adjusted longitudinally thereon while the offsets form shoulders which act as stops preventing the yoke slipping forward of said offsets and so limited in its motion toward the teeth, while also preventing the yoke fror being improperly disconnected from the arms, especially in its whereby loss of T 1e offsets in the lateral arms of the tooth separator not only give an advantage in lengthening the jaws: of the separator without lengthening the slotted yoke or bow l,

but provides more width for the frame 8,

Figure 0, the upright sides 12 of which have room between the contiguous teeth, and the arms of the separator giving free play when the points are brought into full action when the teeth are being separated which wouldnct be the case if these offsets were not formed on the portions of the arms ad acent to the sides of the frame 8.

Having thus described my invention what I claim as new and desire to secure by Letsaid. inturned members and points outwardly extending offsets. leaving the portions rearward off said I offsets positioned close to each other and the portions forward of said offsets positioned spread apart from' each other to a greater extent than said said rear close-together portion'between the said inwardly extending pivotal members and said offsets, the latter acting as stops to the forward 'motion of said yoke.

2. In a tooth separator having a side arm,

and. a separating point thereon, ananchor. adapted tobe fitted'on a tooth adjacent to the teeth'to be separated, said-anchor being carriec'l on a frame which is freely mounted on said side arm allowing the movement of. said separating] po nts without dlsturbing said anchor, Y

3. In. tooth separator, an anchor thereon adapt'edto be fitted on a toothadjacent to the teeth to be separated, the samebeing provided with means for tightening it on 7 rear. portions, and a yoke freely fitted on said tooth, the'side members of the'frame of said anchor dinally extending" loops in whichthelpoints of thelseparator are freely fitted and guided.

.4.. Inca tooth separator, separating points,

arms carrying the latter, and an anchor on the frame thereof adapted tobe fitted on i teeth to be separated.- thus holding the and connected with a tooth adjacent to the separator firmly in posit-ion during. the adjustin r and separatingoperations. f i M having thereon .-longitu-.

5.111 a tooth separator, Ia fra1ne,'a1r

anchor plate on the latter, and ascrew-like member on said frameengageable with said plate adaptingithe' anchor to be applied :to-

a tooth adjacent to the teeth to :be separated and firmly connected with the former.

JAMES w. IVORY.

Witnesses Jonrr A. lVmonRsHnIM, N. BUssINenn. 

